Eh... take a look at my DHCP client list, is this even possible?

[sillymofo]

This is off my wireless router (yup, YAWT), and apparently, there are two IPs assigned to the same host, I have no idea that this can happen

DHCP Client list

WTF?!?!?!?!?!?!

 

[Mill]

Yes.

 

[Nebor]

...how?

 

[sillymofo]

Now keep in mind, the laffatu comp is NOT wireless, direct connect with ONE NIC. But thanks for your insightful answer Mill.

 

[SgtBuddy]

IPs are assigned to a MAC not a host.

52-41-53 is not showing up in the IEEE OUI database for NIC manufactuers

00-10-b5 is made by:

00-10-B5 (hex) ACCTON TECHNOLOGY CORPORATION
0010B5 (base 16) ACCTON TECHNOLOGY CORPORATION
NO.1, CREATION RD. III
SCIENCE-BASED INDUSTRIAL PARK
HSINCHU 300
TAIWAN, REPUBLIC OF CHINA

Looks like you might have a wireless NIC and a hardwire NIC in the same machine.

edit: OK one NIC. Strange. I have seen corrupted DHCP REQs before. This might be one. Sometimes, the DHCP server gets a garbled REQ.

 

[sillymofo]

sgtBuddy

Is it possible that some one is trying to send a bogus REQ and try to get an IP, but how could they if it's the same host name? I have refreshed the DHCP a couple of times but the same thing showed up.

 

[SgtBuddy]

The router could care less about the hostname....waaaay too high on the OSI model...ok, not that high...but high

Try this

Disconnect one of your computers from the LAN.

Rename it the exact name of the one that is connected.

Restart.

You should get an error about two computers on the LAN with the same name.

Both computers should have IP addresses issued from the DHCP server.

Here are my DHCP issued addys using that experiment:

192.168.168.180 organiza-main 0x00022d757963
192.168.168.176 organiza-weepaq 0x00402b6cce45
192.168.168.174 organiza-main 0x00e0189c1f61


edit: grammmmmer..ar...

edit2: w00t! 2^9 postcount

 

[KK]

Originally posted by: SgtBuddy

edit2: w00t! 2^9 postcount

Okay, time to step away from the PC.

KK

 

[AFB]

Looks like someone one has two NIC cards.

Do ipconfig /all and paste the results.

 

[MAME]

Originally posted by: KK

Originally posted by: SgtBuddy

edit2: w00t! 2^9 postcount

Okay, time to step away from the PC.

KK

dude, you're almost diamond!

 

[EyeMWing]

Originally posted by: amdfanboy
Looks like someone one has two NIC cards.

Do ipconfig /all and paste the results.

No, he doesn't, and "NIC card" is redundant. "Network Interface Card card"

And who cares, as long as whatever the hell is happening is working?

 

[MAME]

Originally posted by: EyeMWing

Originally posted by: amdfanboy
Looks like someone one has two NIC cards.

Do ipconfig /all and paste the results.

No, he doesn't, and "NIC card" is redundant. "Network Interface Card card"

And who cares, as long as whatever the hell is happening is working?

don't be so harsh about the NIC card thingie. In books it's even referred to as NIC card.

It's like this, we say "you were" but it used to be "you was". It got popular a while back and now no one even remembers saying "you was". (think about it, were is for multiple people, was is for a singular person) Natrual progression of language, like it or not. That said, yeah...it is kinda dumb.

 

[AFB]

Originally posted by: EyeMWing

Originally posted by: amdfanboy
Looks like someone one has two NIC cards.

Do ipconfig /all and paste the results.

No, he doesn't, and "NIC card" is redundant. "Network Interface Card card"

And who cares, as long as whatever the hell is happening is working?

It is too damn early for that.

 

[DanTMWTMP]

Originally posted by: SgtBuddy
The router could care less about the hostname....waaaay too high on the OSI model...ok, not that high...but high

Try this

Disconnect one of your computers from the LAN.

Rename it the exact name of the one that is connected.

Restart.

You should get an error about two computers on the LAN with the same name.

Both computers should have IP addresses issued from the DHCP server.

Here are my DHCP issued addys using that experiment:

192.168.168.180 organiza-main 0x00022d757963
192.168.168.176 organiza-weepaq 0x00402b6cce45
192.168.168.174 organiza-main 0x00e0189c1f61


edit: grammmmmer..ar...

edit2: w00t! 2^9 postcount

bah..i thought the OSI model is just a model and a reference...it's not really implemented....and i thought routers don't go high on the model...(today's ethernet is not based off of hte OSI model i thought...??...it just loosely "looks" lke it)....welll, i could be wrong...i don't think routers chk for incorrect MAC's since it's low on the osi...and only the higher layers could check for security errors like that...?

my knowledge of this stuff is very rudimentary....please correct me...


ooh oh...where'd u get the info on the mac's and their respective manufacturers! cooool!!

 

[dabuddha]

Originally posted by: cr4zymofo
Now keep in mind, the laffatu comp is NOT wireless, direct connect with ONE NIC. But thanks for your insightful answer Mill.

Perhaps if you would have posted this in the right forum.

 

[Kelemvor]

Probably got some software that's trying ot mess with your network to do bad things. Go run Spybot, Adaware, Virus Checker, etc.

 

[Mill]

Originally posted by: dabuddha

Originally posted by: cr4zymofo
Now keep in mind, the laffatu comp is NOT wireless, direct connect with ONE NIC. But thanks for your insightful answer Mill.

Perhaps if you would have posted this in the right forum.

But it is possible, and he gave little info anyway.

 

[loup garou]

That first MAC address looks very weird to me. I'd try another NIC.

 

[guyver01]

Originally posted by: DanTMWTMP
bah..i thought the OSI model is just a model and a reference...it's not really implemented....and i thought routers don't go high on the model...(today's ethernet is not based off of hte OSI model i thought...??...it just loosely "looks" lke it)....welll, i could be wrong...i don't think routers chk for incorrect MAC's since it's low on the osi...and only the higher layers could check for security errors like that...?

my knowledge of this stuff is very rudimentary....please correct me...


ooh oh...where'd u get the info on the mac's and their respective manufacturers! cooool!!

Today's networks are 100% based on the OSI model.

Ethernet is part of Layer 1 - Physical , and Layer 2 - Data Link .

Physical layer defines the cable or physical medium itself. Data Link layer defines the format of data on the network. A network data frame, aka packet, includes checksum, source and destination address, and data. Ethernet addresses a host using a unique, 48-bit address called its Ethernet address or Media Access Control (MAC) address. The data link layer's protocol-specific header specifies the MAC address of the packet's source and destination.

as for finding MAC -> Mfgr, try IEEE OUI and Company_id Assignments

 

[BigPoppa]

Originally posted by: DanTMWTMP

Originally posted by: SgtBuddy
The router could care less about the hostname....waaaay too high on the OSI model...ok, not that high...but high

Try this

Disconnect one of your computers from the LAN.

Rename it the exact name of the one that is connected.

Restart.

You should get an error about two computers on the LAN with the same name.

Both computers should have IP addresses issued from the DHCP server.

Here are my DHCP issued addys using that experiment:

192.168.168.180 organiza-main 0x00022d757963
192.168.168.176 organiza-weepaq 0x00402b6cce45
192.168.168.174 organiza-main 0x00e0189c1f61


edit: grammmmmer..ar...

edit2: w00t! 2^9 postcount

bah..i thought the OSI model is just a model and a reference...it's not really implemented....and i thought routers don't go high on the model...(today's ethernet is not based off of hte OSI model i thought...??...it just loosely "looks" lke it)....welll, i could be wrong...i don't think routers chk for incorrect MAC's since it's low on the osi...and only the higher layers could check for security errors like that...?

my knowledge of this stuff is very rudimentary....please correct me...


ooh oh...where'd u get the info on the mac's and their respective manufacturers! cooool!!

Routers route on layer 3...or 4. Damn, i'm losing my Cisco knowledge.

 

[guyver01]

Originally posted by: BigPoppa
Routers route on layer 3...or 4. Damn, i'm losing my Cisco knowledge.

routers work at layer 3 of the OSI stack, network layer.

The Network-Control Layer addresses messages, sets up the path between communicating nodes, routes messages across intervening nodes to their destinations, and controls the flow of messages between nodes.

 

[edro]

One of my friend's DHCP log was like 40+ computers because he didn't have WEP on his wireless router... in a dorm room. I promplty fixed that. Now he has 2.

 

[HonkeyDonk]

Originally posted by: MAME

Originally posted by: EyeMWing

Originally posted by: amdfanboy
Looks like someone one has two NIC cards.

Do ipconfig /all and paste the results.

No, he doesn't, and "NIC card" is redundant. "Network Interface Card card"

And who cares, as long as whatever the hell is happening is working?

don't be so harsh about the NIC card thingie. In books it's even referred to as NIC card.

It's like this, we say "you were" but it used to be "you was". It got popular a while back and now no one even remembers saying "you was". (think about it, were is for multiple people, was is for a singular person) Natrual progression of language, like it or not. That said, yeah...it is kinda dumb.

was is for either first person or 3rd person. "I was a...", "He/She/It was a ...."

but if you use "You", u say "You are a...." or in past tense, "You were a...."

I don't think it was ever "You was"

 

[Homerboy]

networking forum Id suggest.

 

[sillymofo]

Originally posted by: Mill

Originally posted by: dabuddha

Originally posted by: cr4zymofo Now keep in mind, the laffatu comp is NOT wireless, direct connect with ONE NIC. But thanks for your insightful answer Mill.

Perhaps if you would have posted this in the right forum.

But it is possible, and he gave little info anyway.

What more info you want cletus? One NIC, one host, two IPs (and also two MACs), there... that's just a problem that I don't see an equation.